CN105788510A - OLED display device and aging method thereof - Google Patents
OLED display device and aging method thereof Download PDFInfo
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- CN105788510A CN105788510A CN201410789106.4A CN201410789106A CN105788510A CN 105788510 A CN105788510 A CN 105788510A CN 201410789106 A CN201410789106 A CN 201410789106A CN 105788510 A CN105788510 A CN 105788510A
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Abstract
The invention relates to an OLED display device and an aging method thereof. The OLED display device comprises a plurality of gate lines and a GIP circuit; the GIP circuit is provided with a plurality of input ends, wherein the plurality of input ends are used for receiving first control signals and second control signals respectively; the GIP circuit responds to the first control signals so as to drive a plurality of gate lines at the lower side of a display region; the GIP circuit responds to the second control signals so as to drive a plurality of gate lines at the upper side of the display region; and the plurality of input ends of the GIP circuit are respectively provided with a first switch. According to the OLED display device and the aging method thereof provided by the invention, the input ends of the GIP circuit of the OLED display device are provided with the switches, so that the input of the first control signals and the second control signals can be controlled, and therefore, block display can be realized, the drop of power source voltage can be decreased, and current which is adjacent to a power source and current which is far from the power source end will not be greatly different from each other, and as a result, uneven brightness can be alleviated, and the OLED display device can pass an aging test smoothly.
Description
Technical field
The present invention relates to technical field of flat panel display, particularly to a kind of OLED display and aging method thereof.
Background technology
Active matrix/organic light emitting display (English full name ActiveMatrixOrganicLightingEmittingDisplay, it is called for short AMOLED) utilize thin film transistor (TFT) (English full name ThinFilmTransistor, it is called for short TFT), collocation electric capacity storage signal, control Organic Light Emitting Diode (English full name OrganicLightingEmittingDiode, be called for short OLED) brightness and GTG performance, thus showing image.Owing to active matrix/organic light emitting display can self-luminescence, unlike Thin Film Transistor-LCD (English full name ThinFilmTransistorliquidcrystaldisplay, it is called for short TFT-LCD) need back light system (backlightsystem) just can light, therefore visibility and brightness are all higher, and more frivolous.At present, active matrix/organic light emitting display is described as the display of new generation that can replace Thin Film Transistor-LCD.
In active matrix/organic light emitting display, the supply voltage Vdd that power line provides controls the cross-pressure of Organic Light Emitting Diode cathode and anode, and the brightness of pixel is played a decisive role.And supply voltage Vdd is had certain pressure drop (IRDrop) by the impact of power line impedance, pressure drop (IRDrop) can cause that difference occurs in the power supply signal of input pixel.Wherein, the resistance value of power line is directly proportional to the length of power line.
Active matrix/organic light emitting display needs to carry out aging (Aging) in the fabrication process so that (material property reaches steady statue to Organic Light Emitting Diode.After overaging, the brightness flop of Organic Light Emitting Diode generally tends towards stability.In order to ensure that product brightness after weathering and brightness uniformity can both meet shipment requirement, burn-in test (AgingTest) can be carried out after aging, namely after aging, choose several test points in the viewing area of product to measure brightness respectively.But, find in burn-in test process, existing active matrix/organic light emitting display brightness irregularities.
Base this, how to solve existing active matrix/organic light emitting display brightness irregularities after weathering, it is impossible to have become as, by the problem of burn-in test, the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
It is an object of the invention to provide a kind of OLED display and aging method thereof, to solve existing active matrix/organic light emitting display brightness irregularities after weathering, it is impossible to by the problem of burn-in test.
For solving the problems referred to above, the present invention provides a kind of OLED display, and described OLED display includes: some gate lines and GIP circuit；Described GIP circuit has several first input ends, and several first input ends described are respectively used to receive the first control signal and the second control signal；Described some gate lines are arranged at the viewing area of described OLED display, described GIP Circuit responce drives a plurality of gate line on the downside of described viewing area in described first control signal, and described GIP Circuit responce drives a plurality of gate line on the upside of described viewing area in described second control signal；Wherein, several first input ends of described GIP circuit are provided with the first switch.
Optionally, in described OLED display, also including some source electrode lines, described some source electrode lines and described some gate lines are crisscross setting.
Optionally, in described OLED display, also including source electrode driver, described source electrode driver is used for driving described some source electrode lines.
Optionally, in described OLED display, described source electrode driver has several the second inputs, several second inputs described are for receiving the 3rd control signal and the 4th control signal respectively, described source electrode driver drives a plurality of source electrode line on the left of viewing area in response to described 3rd control signal, and described source electrode driver drives a plurality of source electrode line on the right side of viewing area in response to described 4th control signal.
Optionally, in described OLED display, several second inputs of described source electrode driver being provided with second switch, described second switch is for controlling the input of the 3rd control signal or the 4th control signal.
Optionally, in described OLED display, described first switch and second switch are thin film transistor switch.
Accordingly, present invention also offers a kind of aging method, described aging method includes:
OLED display as above is provided；
Described OLED display is positioned in aging equipment；And
The both sides up and down of described OLED display are lighted respectively by the first switch.
Optionally, in described aging method, before or after lighting the upper and lower both sides of described OLED display respectively by the first switch, also include the left and right sides being lighted described OLED display by second switch respectively.
In OLED display provided by the invention and aging method thereof, by the input of the GIP circuit in OLED display, switch is set, control the first control signal and the input of the second control signal, realize piecemeal to show, to reduce the pressure drop of supply voltage, avoiding the electric current near power end, with the electric current away from power end, larger difference occurs, thus improving brightness disproportionation phenomenon, and then being smoothly through burn-in test.
Accompanying drawing explanation
Fig. 1 is the structural representation of the OLED display of the embodiment of the present invention；
Fig. 2 is the flow chart of the aging method of the embodiment of the present invention.
Detailed description of the invention
It is described in further detail below in conjunction with the drawings and specific embodiments proposition one OLED display to the present invention and aging method OLED display thereof and aging method thereof.Will be apparent from according to the following describes advantages and features of the invention.It should be noted that, accompanying drawing all adopts the form simplified very much and all uses non-ratio accurately, only in order to convenience, the purpose aiding in illustrating the embodiment of the present invention lucidly.
Existing OLED display panel is brightness disproportionation when burn-in test, it is impossible to reach shipment requirement.This is conducted in-depth research by inventor, the reason of brightness disproportionation is in that to find to cause existing OLED display panel to occur after weathering, supply voltage Vdd is walked the impact of line impedence by power supply and there is pressure drop (IRDrop), there is difference in the electric current making diverse location, simultaneously, in ageing process, the temperature of OLED display panel rises, and current difference and temperature impact cause OLED display panel obvious brightness disproportionation occur.
When pel array is more, power line is longer, and the pressure drop (IRDrop) of supply voltage Vdd is relatively larger, and the comparison in difference of the power supply signal being therefore actually reached pixel terminal is big.Particularly, near power end and big away from power supply signal comparison in difference between power end so that near power end and the electric current away from power end, notable difference occurs, in turn result in brightness irregularities.
If OLED display panel takes only from one end, pixel to be provided the mode of supply voltage Vdd, OLED display panel can be dimmed gradually.If taking the upper and lower two ends mode to pixel supply line voltage Vdd, whole OLED display panel presents upper and lower side dark situation bright, middle.Even if power line adopts network structure, the surrounding at pel array lays power line, and powering from four direction, it is bright also to form periphery, middle dark situation.
And, generally use big electric current time aging and light OLED display panel.Using big electric current to light OLED display panel can cause the temperature of OLED display panel to rise, and temperature impact can be further exacerbated by the brightness disproportionation of OLED display panel.
To sum up, existing OLED display panel reason of brightness disproportionation when burn-in test is caused to be in that, power supply cabling impedance influences is actually reached the supply voltage Vdd of pixel terminal, make the supply voltage Vdd being actually reached pixel terminal inconsistent, in turn result in current difference, cause brightness disproportionation, ageing process uses big electric current to light OLED display panel simultaneously, the temperature making OLED display panel rises, and has been further exacerbated by the aobvious brightness disproportionation of OLED.In order to solve the problems referred to above, present applicant proposes following technical scheme:
Refer to Fig. 1, it is the structural representation of OLED display of the embodiment of the present invention.As shown in Figure 1, described OLED display 10 includes: some gate line (not shown)s and GIP circuit 12, described GIP circuit has several first input ends, several first input ends described are for receiving the first control signal SW1 and the second control signal SW2 respectively, described GIP Circuit responce drives a plurality of gate line on the downside of the AA of viewing area in described first control signal SW1, described GIP Circuit responce drives a plurality of gate line on the upside of the AA of viewing area in described second control signal SW2, several first input ends of described GIP circuit are provided with the first switch 17.
Concrete, described OLED display 10 includes some gate lines (be also referred to as scanning line or address wire) and some source electrode lines (being also referred to as data wire or holding wire), and described some gate lines and some source electrode lines are respectively positioned on the viewing area AA of described OLED display 10.Described gate line, by gate driver drive, is used for providing scanning signal.Described source electrode line is driven by source electrode driver, is used for providing data signal.The data signal display image that signal and source electrode line offer are provided that described OLED display 10 provides according to gate line.For Simplified flowsheet, reducing material cost, current gate drivers is generally directly formed in OLED display panel, the gate drivers directly formed in OLED display panel is called in panel grid (gateinpanel is called for short GIP) circuit.
Please continue to refer to Fig. 1, described GIP circuit is connected with described some gate lines, for driving described some gate lines, described GIP circuit has several first input ends, several first input ends described for receiving the first control signal SW1 and the second control signal SW2 respectively, described GIP circuit respectively responsive to the first control signal SW1 and the second control signal SW2 to drive the gate line of the upper and lower both sides of viewing area AA.Wherein, several first input ends of described GIP circuit are provided with the first switch 17, and described first switch 17 is for controlling the first control signal SW1 or the input of the second control signal SW2.Described first switch 17 is opened, and described first control signal SW1 or the second control signal SW2 provides the first input end to described GIP circuit.
In the present embodiment, described GIP circuit is connected with the first control line 13 and the second control line 14 respectively, described first control line 13 is used for providing the first control signal SW1, described second control line 14 is used for providing the second control signal SW2, described first switch 17 to be arranged at the junction (i.e. the input of described GIP circuit) of described first control line 13 and the second control line 14 and described GIP circuit.Wherein, it is arranged at described first control line 13 first switch 17 with the junction of GIP circuit for controlling the input of the first control signal SW1, described first control signal SW1 is for controlling the driving of downside gate line, being arranged at described second control line 14 first switch 17 with the junction of GIP circuit for controlling the input of the second control signal SW2, described second control signal SW2 is for controlling the driving of upside gate line.
As it is shown in figure 1, when the first switch 17 of described first control line 13 with the junction of GIP circuit is opened, described GIP circuit receives the first control signal SW1, thus the gate line on the downside of the AA of viewing area is driven.When the first switch 17 of described second control line 14 with the junction of described GIP circuit is opened, described GIP circuit receives the second control signal SW2, thus the gate line on the upside of the AA of viewing area is driven.
Please continue to refer to Fig. 1, described OLED display 10 also includes source electrode driver (not shown), described source electrode driver is connected with described some source electrode lines, for driving described some source electrode lines, described source electrode driver has several the second inputs, several second inputs described for respectively receive the 3rd control signal SW3 and the four control signal SW4, described source electrode driver respectively responsive to the 3rd control signal SW3 and the four control signal SW4 to drive the source electrode line of the AA left and right sides, viewing area.Wherein, several second inputs of described source electrode driver are provided with second switch 18, and described second switch 18 is for controlling the input of the 3rd control signal SW3 and the four control signal SW4.Described second switch 18 is opened, and described 3rd control signal SW3 or the 4th control signal SW4 provides the second input to described source electrode driver.
In the present embodiment, described source electrode driver is connected with the 3rd control line 15 and the 4th control line 16 respectively, described 3rd control line 15 is used for providing the 3rd control signal SW3, described 4th control line 16 is used for providing the 4th control signal SW4, described second switch 18 to be arranged at the junction (i.e. the input of described source electrode driver) of described 3rd control line 15 and the 4th control line 16 and described source electrode driver.Wherein, it is arranged at described 3rd control line 15 second switch 18 with the junction of source electrode driver for controlling the input of the 3rd control signal SW3, described 3rd control signal SW3 is for controlling the driving of left side source line, being arranged at described 4th control line 16 second switch 18 with the junction of source electrode driver for controlling the input of the 4th control signal SW4, described 4th control signal SW4 is for controlling the driving of right side source electrode line.
As shown in Figure 1, when the second switch 18 of described 3rd control line 15 with the junction of source electrode driver is opened, described source electrode driver receives the 3rd control signal SW3, thus the source electrode line on the left of the AA of viewing area is driven, when the second switch 18 of described 4th control line 16 with the junction of source electrode driver is opened, described source electrode driver receives the 4th control signal SW4, thus the source electrode line on the right side of the AA of viewing area is driven.
When the first switch 17 controlling the first control signal SW1 all open, control the second switches 18 that first switch 17 of the second control signal SW2 was turned off, controlled the 3rd control signal SW3 all open, control the second switch 18 of the 4th control signal SW4 be turned off time, described OLED display 10 display bottom left section.
When the first switch 17 controlling the first control signal SW1 be turned off, control the second switches 18 that first switch 17 of the second control signal SW2 all opened, controlled the 3rd control signal SW3 all open, control the second switch 18 of the 4th control signal SW4 be turned off time, described OLED display 10 display upper left.
When the first switch 17 controlling the first control signal SW1 all open, control the second switches 18 that first switch 17 of the second control signal SW2 was turned off, controlled the 3rd control signal SW3 be turned off, control the second switch 18 of the 4th control signal SW4 all open time, described OLED display 10 display lower right-most portion.
When the first switch 17 controlling the first control signal SW1 be turned off, control the second switches 18 that first switch 17 of the second control signal SW2 all opened, controlled the 3rd control signal SW3 be turned off, control the second switch 18 of the 4th control signal SW4 all open time, described OLED display 10 display upper right portion.
From the foregoing, described OLED display 10 1/4th can carry out piecemeal for unit with what show area and show, whole viewing area AA is divided into 4 independent display units.When only lighting one of them display unit, the supply voltage Vdd provided due to power line is only consumed by the screen body of 1/4th, the distance that electric current flows through shortens relatively, the curent change that power line impedance causes also reduces, therefore the pressure drop (IRDrop) of supply voltage Vdd is very little, near power end with away from power end without occur obvious current difference.Owing to the electric current near power end is essentially identical with the electric current away from power end, there will not be obvious brightness disproportionation phenomenon even across aging.
In the present embodiment, described first switch 17 and second switch 18 are thin film transistor switch (TFT).
Accordingly, the present embodiment additionally provides a kind of aging method.Refer to Fig. 2, it is the flow chart of aging method of the embodiment of the present invention.As in figure 2 it is shown, described aging method comprises the following steps:
S10: OLED display 10 described above is provided；
S11: described OLED display 10 is positioned in aging equipment；
S12: switch 17 both sides up and down lighting described OLED display 10 respectively by first.
Concrete, first, it is provided that OLED display 10 as above, described OLED display 10 has 4 independent display units controlled.
Then, OLED display 10 as above is positioned in aging equipment.Carrying out aging condition in aging equipment and can adopt existing aging condition, the present invention does not elaborate.
Then, each display unit of described OLED display 10 is lighted respectively by the first switch 17 and second switch 18.Wherein, switch 17 by first and light the display unit of upper and lower both sides in described OLED display 10 respectively, light the display unit of the left and right sides in described OLED display 10 respectively by second switch 18.
After aging end, take out described OLED display 10 and choose test point and carry out brightness measurement.The OLED device provided according to the known employing embodiment of the present invention of measurement result and aging method, it is possible to be obviously improved brightness disproportionation phenomenon.
To sum up, in OLED device provided by the invention and aging method thereof, by arranging switch at the GIP circuit of OLED display and the input of source electrode driver, control the input of described first control signal, the second control signal, the 3rd control signal and the 4th control signal respectively, make described OLED display be capable of piecemeal to show, reduce the pressure drop of supply voltage, avoid with the electric current away from power end, larger difference occurring near power end, thus improving brightness disproportionation phenomenon, and then it is smoothly through burn-in test.
Foregoing description is only the description to present pre-ferred embodiments, not any restriction to the scope of the invention, any change that the those of ordinary skill in field of the present invention does according to the disclosure above content, modification, belongs to the protection domain of claims.
Claims (8)
1. an OLED display, it is characterised in that including: some gate lines and GIP circuit；Described GIP circuit has several first input ends, and several first input ends described are respectively used to receive the first control signal and the second control signal；Described some gate lines are arranged at the viewing area of described OLED display, described GIP Circuit responce drives a plurality of gate line on the downside of described viewing area in described first control signal, and described GIP Circuit responce drives a plurality of gate line on the upside of described viewing area in described second control signal；Wherein, several first input ends of described GIP circuit are provided with the first switch.
2. OLED display as claimed in claim 1, it is characterised in that also including some source electrode lines, described some source electrode lines and described some gate lines are crisscross setting.
3. OLED display as claimed in claim 2, it is characterised in that also including source electrode driver, described source electrode driver is used for driving described some source electrode lines.
4. OLED display as claimed in claim 3, it is characterized in that, described source electrode driver has several the second inputs, several second inputs described are for receiving the 3rd control signal and the 4th control signal respectively, described source electrode driver drives a plurality of source electrode line on the left of viewing area in response to described 3rd control signal, and described source electrode driver drives a plurality of source electrode line on the right side of viewing area in response to described 4th control signal.
5. OLED display as claimed in claim 4, it is characterised in that be provided with second switch on several second inputs of described source electrode driver, described second switch is for controlling the input of the 3rd control signal or the 4th control signal.
6. OLED display as claimed in claim 5, it is characterised in that described first switch and second switch are thin film transistor switch.
7. an aging method, it is characterised in that including:
OLED display as according to any one of claim 1 to 6 is provided；
Described OLED display is positioned in aging equipment；And
The both sides up and down of described OLED display are lighted respectively by the first switch.
8. aging method as claimed in claim 7, it is characterised in that before or after lighting the upper and lower both sides of described OLED display respectively by the first switch, also include the left and right sides being lighted described OLED display by second switch respectively.
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| CN201410789106.4A CN105788510A (en) | 2014-12-17 | 2014-12-17 | OLED display device and aging method thereof |
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| CN106373513A (en) * | 2016-11-15 | 2017-02-01 | 武汉华星光电技术有限公司 | Liquid crystal display aging test method and liquid crystal display |
| CN107393481A (en) * | 2017-08-23 | 2017-11-24 | 京东方科技集团股份有限公司 | Organic Light Emitting Diode OLED life-span aging method and system |
| CN107424562A (en) * | 2017-08-25 | 2017-12-01 | 京东方科技集团股份有限公司 | Aging equipment and aging method |
| CN107491217A (en) * | 2017-08-30 | 2017-12-19 | 厦门天马微电子有限公司 | A kind of display panel and display device |
| CN108182900A (en) * | 2018-01-29 | 2018-06-19 | 上海天马有机发光显示技术有限公司 | A kind of display panel burin-in process device and display panel ageing method |
| CN109584717A (en) * | 2019-01-22 | 2019-04-05 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN110310598A (en) * | 2019-06-28 | 2019-10-08 | 上海天马有机发光显示技术有限公司 | A kind of display panel and its application method |
| WO2020191662A1 (en) * | 2019-03-27 | 2020-10-01 | 京东方科技集团股份有限公司 | Manufacturing method and processing apparatus for display substrate |
| CN111740034A (en) * | 2020-06-30 | 2020-10-02 | 上海天马有机发光显示技术有限公司 | Aging method and device for organic light emitting display panel |
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| CN116052594A (en) * | 2023-01-19 | 2023-05-02 | 合肥维信诺科技有限公司 | A voltage drop compensation method, computer device and storage medium |
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| CN106373513A (en) * | 2016-11-15 | 2017-02-01 | 武汉华星光电技术有限公司 | Liquid crystal display aging test method and liquid crystal display |
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| WO2020191662A1 (en) * | 2019-03-27 | 2020-10-01 | 京东方科技集团股份有限公司 | Manufacturing method and processing apparatus for display substrate |
| CN110310598A (en) * | 2019-06-28 | 2019-10-08 | 上海天马有机发光显示技术有限公司 | A kind of display panel and its application method |
| CN111740034A (en) * | 2020-06-30 | 2020-10-02 | 上海天马有机发光显示技术有限公司 | Aging method and device for organic light emitting display panel |
| CN111740034B (en) * | 2020-06-30 | 2024-03-08 | 武汉天马微电子有限公司 | Aging method and device for organic light-emitting display panel |
| CN113160744A (en) * | 2021-03-18 | 2021-07-23 | 京东方科技集团股份有限公司 | Display panel, driving method thereof and display device |
| CN116052594A (en) * | 2023-01-19 | 2023-05-02 | 合肥维信诺科技有限公司 | A voltage drop compensation method, computer device and storage medium |
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Application publication date: 20160720 |